Animal shears



May l2, 1931. T. H. TROY Y1,804,9(51v ANIMAL SHEARS Filed Aug. 8. 1929 I9 'T l. y- Z- ze@ 1'* 'l Z7 I' l: I A 4 "f" 6 'f5 i /a O ed't'o maintainthe fork in proper place at Y, to" be used.

Patented lilla/ay 12, 19351 THOMAS n. TROY, oFBoIsE, 11a-imoy i ANIMALsimens Appncatimi med August s, 1929. sei-inno. 384,245.

.This invention relates to animal shears, and has for one offits objectsto provide a device of this character which shall be especially Yadapted for shearing sheep and wherein the comb or stationary cutterblade shall be sup-y ported in a mannerto prevent it from springy ingdownwardly whenunder heavy tension.

- The invention has-for la furtherv objectto i provide shears of thecharacter stated wherein the comb shall kbe equipped with acomparatively large number of short and closely related teeth totheend'that the shears will out Vsmoother and faster than those now in use.f v

The invention has for a further object to provide shears ofthe characterstated wherein'the movable cutter blade operating meansshall embody aswivel forlrpivotally mounted upon a stationary post, the post beingadaptall times and thus obviate the necessity for adjusting the fork inordery to maintain the shearsin a highly eflicient condition.

l The invention has for' avfurther object to ,T215 provide shears of thecharacter stated where-V in'theswivel fork shallembody front and r'earsections', wherein the rear fork section shallbe pivotedv tothestationary'post, and

wherein'th'e front4 section shall becconnected 'go 'to themovable'clutter'blade' 'and-'connected 'tofthe rear section by Va pivotarranged atv `rightangles to the stationary post so as to permit thickor thin movable cutter blades The invention has `for a further object toprovide shears of the character stated wherein the pivotal connectionbetween the front and rear swivel forl sections vshall bek arrangedclosecto the front side of the stationary post A40 to theend'that'asubstantial c'lrivingV connecf tionjmay be'established betweenthe sections. The invention hasfor a still yfurther object -to provideyshears of the character stated wherein the front section of the' swivelfork i5 shall be provided near its front end with ya seat for. a tensionelement, the locationof the seatpermitting the movable cutter blade tobe held against the comb under the required tension. 1

'to With'fthe foregoing and other? objects in m @me view, the natureofwhich will appear'fas the n description proceeds, the inventionconsists in the construction, combination and arrangement of partshereinafter fully described and claimed, and illustrated intheaccompanying drawings, wherein f v `Figure 1 1s a top plan View ofthe'shears with the upper section ofthe head and a-portion of the rearsection of the-handle omitted; Figure 2 is a view partlyin sideelevation and partly in longitudinal 'section of the shears; and Y i vFigure 3 isa bottom plannviewv of the-comb yand a portion of the head ofthe lshears.'A

Referring in. ydetail to the drawings, 1 designates the head,.2 thehandle, 3f'the comb or stationaryV cutter Vblade,"and 4 the movf ablecutterblade of the shears. The head 1 'and the handle@ are hollow', andtheyr embody upper and lower sections .which may be connected togetherin any'suitable manner. The head lis provided inits front andlateralsides with thev op'eningv through which kthe comb 3 and the .cutterblade 4 eXt-end; K v The lower sideof the head 'hasa flat-upl 1 perrsurface and-an upwardly and-forwardly downwardly when .under heavy vnerend of the support 6y and extends transs versely thereof. The combismountedl upon the support with the shoulder 7,1andvit is securedV to thevsupport bya bar-v8,whichrests upon its up-y 6y with itsrearfedge incontact f per sideand by machine screws 9 which pass c through thesupport and rvcomb yand engage the bar, the v,bar serving to hold thecomb flat againstthe support; y f1 v The means for 'operating Vthemovable cutter'blade 4 comprises a swivel fork`10,jwhich consists of ashortV front sectiony 11 and along rear section 12. The fork section 12is hinged near its front -endupona stationarypost 13,

which is rigidlyv secured to andy extends' up- .v

Y wrdly from the lower side of the head 1.

lthe post between the upper nut 14 and a washer 17 arrano'ed u non theost and `cone l P tacting with the head thereof. The stationary post 13holds the swivel fork 10 in proper place at all times, anddue thereto,adjustment of the fork is not necessary in order to maintain the shearsin a highly elficient condition.

The stationary post 13 mounts the swivel fork for lateral swingingmovement and this movement maybe imparted there-to by any suitablemeans. The mea-ns shown comprises a shaft 18, which is adapted to beconnected to an electric or other motor 'by a ieXible shaft, not shown.This means :also comprises a cam 19, which is -ca-rried by the shaft 18and larranged within a yoke 20 on the swivel fork 10. l

The front swivel fork section 11 `is connected at its rear endtothefront end of the forliy section 12 :for movement about an axis 21arranged -at right -angles to the .stationary post 13. Thefadjacent endsof ythe fork sections 11- and 12 .are laterally enlarged andprovidedwitli intertting lugs 22 through which the pivot pin 21 passes.The'pivotal connection between the fork sections 11 and 12 permits thefork section 11 to be raised and lowered in order to permit a movablecutter blade of the required thickness to be used. The pivotalconnection between the fork sections 11-and 12 is located close to thestationary post 13 in order to establish a substantially rigid .driving.connection between these parts. The swivel fork section 11 is connectedto the movable cutter blade 4, :as at 22a. The cutter `blade4 is held incontact with vthe comb 3 by a tension rod 23, which contacts with theswivel fork section 11. The head 1 is :pro- -vided lwith an upwardly andrearwardly inclined tubular extension 24'in which is screw lthreadedlyengaged an Iadjustingelement l25 for the tension rod 23. The swivel forksection 11 is provided with a seat 26 for the Vten- -sion rod 23, andthe seat is located near the frontend of said fork ysection so .as toinsure vthe holding .ofthe movable cutter blade 4in full abuttingcontact with the comb 3.

The upper end of the tension vrod 23 `is -securedto the adjusting member:25 and the lower end thereofrests upon the downward- .flyandrearwardlyinclined upper `siutace 27 of the seat 26.

The comb 3 has a greater number of teeth than the corresponding part ofthe animal shears now on the market. These teeth 28 are comparativelyshort and closely related. Due to their number and their close relation,and to the fact that they are short, the shears cuts wool smoother andfaster than the shears now in use.

From the foregoing description, taken in connection with theaceompanyingv drawing, it will be apparent that the comb 3 is firmlysecured to its support 6, is held by the support Aagainst downwardspringing when under heavy tension, and insures the smooth and rapidcutting of wool. It will also be apparent that the mounting of theswivel fork 10 upon the stationary post 13 insures the for-lr remainingin proper posi-tion without adjustment, that ythe close association ofthe post 13 and the pivot 21 of the sections l1 and 12 of the swivelforl l() andthe location' ot the swivel forlnestablishes a substantiallyrigid driving yconnection between the swivel fork Vsections andeliminates heating` of :the machine and vibration. It will .stillfurther be apparent that the location of the tension rest 26 near thefront end of the swivel vpost section 11 insures the maintenance of themovable cutter blade 4 in full abutting `contact with the comb.

While I have described the .principle of the invention together with thestructure which I now consider the Apreferred embodiment thereof, it isto be understood that Ythe structure shown is -merely illustrative andthat such changes may be made, when Vdesired, las fall within the scopeof the invention als claimed.

l claim Y n l. A shears of the characterset tortln'com- `prising a combhaving a large number of short ,and closely related teeth, :asupport forthe comb extending from the rear end thereof to a point close to therear ends `of the teeth, a -ba-r extending Aacross vthe comb andcontacting throughout-its entire length with the upper -surilacefof thecomb, screws passing through the support and .comb and engaging thebar,ya shoulder at the rear end of the support contacting with the rear endof the comb, a movable Acutter blade mounted upon the comb, a stationarypostadjacent the rear vends of the ycomb and support, a swivel barembodying a short front `and a longrear section, means pivotallyconnecting the 4sections tolgether, said means comprisinga plurality ofspaced interiitting lugs, and a pivot lextenda tension barveontactingwith Said surface of the seat.

2. A shears of the character set forth, leorni prising'a head, a comb, amovable cutter blade mounted upon the comb, a stationary 4 post havingits lower end extending through the head and provided at its upper endwith a head, ,upper and lower members engaging the post and contactingwith the upper and lower surfaces of said first head to ixedly securethe post thereto, a swivel fork embodying pivotally eonneetedfront andrear sections of which the latter is provided near said connection withan opening receiving the post, said front and rear sections having aplurality of spaced interfitting lugs and a pvot for securing said lugstogether, va bushing arranged ink said opening and surrounding the postand resting upon said upper member,y a member arranged between the upperend of the bushing and the head of the post, and a tensioning elementcontacting with the front fork section.

In testimonywhereof yI hereunto aix'mv signature. Y vTHOMAS H. TROY.

